REUTERS/Mick Tsikas
A platypus bill is able to detect subtle electric fields produced by its prey while hunting and scavenging for its food. The platypus dives to search for food along the bottom of a body of water like a river or a stream. It seeks out bottom-dwelling creatures like crustaceans, worms, and insect larvae.
Using push-rod mechanoreceptors, the platypus bill is able to pick up on changes in pressure, motion, and electrical signals left behind by small prey. The platypus sweeps its head from side to side to activate the mechanoreceptors, a chemical structure that allows for the detection of various stimuli like touch, pressure, vibration, and sound.
Source: The American Museum of National History
Editor's note: This story was first published on July 15, 2016.